Hi, I'm currently working on a plugin that deals with a cmm-file model and have a few questions about how to do certain things. Mainly I would like to be able to modify the model by adding new markers and links to the model. I have managed to figure out how to make new markersets and add them to the session but not how to alter existing ones aka the model that I load from the cmm file.

Additionally I am making use of the marker_extra_attributes info since the cmm file im reading has attributes there that I need, but as I read in the documentation these aren't saved in sessions and I wondered if there is a way to do just that.

Lastly, I was wondering if it is possible to place any mesh in the scene, for instance a cube.

-William